In other words, if you do this:
http://www.google.com/
http://www.theflatearthsociety.org/forum/
http://www.omgomg.eu/
http://www.sokarul.biz/
http://www.mail.ru/
http://www.zombo.com/It'll work fine, but if you start using tags like
these, it will not. Mind you, after you've posted, those tags
will be automatically added. This won't be a problem unless you decide to edit your post (in which case you'll have to correct all links manually).
This problem is a result of someone (Daniel?) explicitly setting the web server (not the forum software) up to do so. It is a user fault, not a software fault, and as such is trivial to fix.